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Leaves opposite or 3-whorled, shortly petiolate; lamina 3–8(14) × 2–5(7.5) cm, elliptic, acute or shortly acuminate and apiculate at the apex, cuneate at the base, entire, chartaceous, markedly discolorous, pubescent above with fine ± bulbous-based hairs making the upper surface ± densely papillose mainly after the fall of the hairs, ± densely pale yellowish-grey soft-woolly beneath with the indumentum sometimes hiding the nervation; petiole up to 9 mm long, slender, hairy as the branchlets.
Flowers in condensed or capitate cymes up to 4 cm in diameter, axillary in the uppermost 1–2 whorls of leaves and sometimes appearing terminal; peduncles up to 7 cm long, ± equalling the subtending leaf, long-spreading hairy with indumentum similar to that on the bracts and pedicels; bracts ovate to lanceolate-linear, narrowly attenuate into a long point.
A shrub or a scrambler, 1–3 m tall, sometimes with long trailing branches; older branches subglabrous with a slightly fissured, brownish bark; young shoots and flowering branchlets subcylindrical, ± densely villous with soft, whitish-yellow, somewhat long hairs.
Corolla white, scented; tube 9–11.5(18?) mm long, narrowly cylindrical, widening slightly upwards, ± densely covered with stipitate and minute sessile glands; lobes elliptic to round, 2.2–2.5 × 1.2–1.8 mm.
Calyx white-hairy; tube 2–2.5 mm long, cylindrical; lobes longer than the tube, 3–5 mm long, attenuate into a filiform point, longer than the triangular base, pilose.
Fruit dull brown, 1–1.3 × 1–1.5 cm, globose, each lobe longitudinally grooved; fruiting calyx lobes c. 5 mm long, ovate, acuminate, ridged.
Stamens and style exserted 3–8 mm.
